Camera optical lens

ABSTRACT

Disclosed is a camera optical lens, comprising, from an object side to an image side in sequence: a first lens having a positive refractive power; a second lens having a negative refractive power; a third lens having a positive refractive power; a fourth lens having a positive refractive power; and a fifth lens having a negative refractive power; wherein, the camera optical lens satisfies: 12.50≤f3/f≤20.00; 0.30≤(R3+R4)/(R3−R4)≤1.00; and 0.30≤d5/d6≤0.50; where, f denotes a focus length of the camera optical lens; f3 denotes a focus length of the third lens; R3 and R4 denote central curvature radii of an object side surface and an image side surface of the second lens respectively; d5 denotes an on-axis thickness of the third lens; and d6 denotes an on-axis distance from the image side surface of the third lens to an object side surface of the fourth lens.

TECHNICAL FIELD

The present disclosure generally relates to optical lens, in particularto a camera optical lens suitable for handheld terminals, such as smartphones and digital cameras, and imaging devices, such as monitors and PClens.

BACKGROUND

With the emergence of smart phones in recent years, the demand forminiature camera lens is increasing day by day, but in general thephotosensitive devices of camera lens are nothing more than ChargeCoupled Device (CCD) or Complementary Metal-Oxide Semiconductor Sensor(CMOS sensor). As the progress of the semiconductor manufacturingtechnology makes the pixel size of the photosensitive devices becomesmaller, and with the current development trend of electronic productstowards better functions and thinner and smaller dimensions, miniaturecamera lens with good imaging quality therefore have become a mainstreamin the market.

In order to obtain better imaging quality, the lens that istraditionally equipped in mobile phone cameras adopts a three-piece orfour-piece lens structure. While, with the development of technology andthe increase of the diverse demands of users, and as the pixel area ofphotosensitive device is becoming smaller and smaller and therequirement of the system on the imaging quality is improvingconstantly, the five-piece lens structure gradually appears in lensdesign. The common five-piece lens has good optical performance, but thedesign on focal power, lens spacing and lens shape is not reasonable,thus the lens structure could not meet the requirements for having alarge aperture, ultra-thinness and a wide angle while having goodoptical performance.

Therefore, it is necessary to provide a camera lens which meets therequirements for having a large aperture, ultra-thinness and a wideangle while having good optical performance.

SUMMARY

Some embodiments of the present disclosure provides a camera opticallens comprising five lenses, wherein, the five lenses are, from anobject side to an image side in sequence: a first lens having a positiverefractive power; a second lens having a negative refractive power; athird lens having a positive refractive power; a fourth lens having apositive refractive power; and a fifth lens having a negative refractivepower; wherein, the camera optical lens satisfies the followingconditions: 12.50≤f3/f≤20.00; 0.30≤(R3+R4)/(R3−R4)≤1.00; and0.30≤d5/d6≤0.50; where, f denotes a focus length of the camera opticallens; f3 denotes a focus length of the third lens; R3 denotes a centralcurvature radius of an object side surface of the second lens; R4denotes a central curvature radius of an image side surface of thesecond lens; d5 denotes an on-axis thickness of the third lens; and d6denotes an on-axis distance from an image side surface of the third lensto an object side surface of the fourth lens.

As an improvement, the camera optical lens further satisfies thefollowing conditions: 0.80≤f1/f≤0.90, where, f1 denotes a focus lengthof the first lens.

As an improvement, the camera optical lens satisfies the followingconditions: 1.00≤(R7+R8)/(R7−R8)≤2.50; wherein, R7 denotes a centralcurvature radius of an object side surface of the fourth lens; and R8denotes a central curvature radius of an image side surface of thefourth lens.

As an improvement, the camera optical lens further satisfies thefollowing conditions: −3.45≤(R1+R2)/(R1−R2)≤−0.95; and 0.07≤d1/TTL≤0.21;wherein, R1 denotes a central curvature radius of an object side surfaceof the first lens; R2 denotes a central curvature radius of an imageside surface of the first lens; d1 denotes an on-axis thickness of thefirst lens; and TTL denotes a total optical length from an object sidesurface of the first lens to an image surface of the camera optical lensalong an optical axis.

As an improvement, the camera optical lens satisfies the followingconditions: −4.42≤f2/f≤−1.11; and 0.02≤d3/TTL≤0.07; wherein, f2 denotesa focus length of the second lens; d3 denotes an on-axis thickness ofthe second lens; and TTL denotes a total optical length from an objectside surface of the first lens to an image surface of the camera opticallens along an optical axis.

As an improvement, the camera optical lens satisfies the followingconditions: −28.22≤(R5+R6)/(R5−R6)≤−4.91; and 0.03≤d5/TTL≤0.08; wherein,R5 denotes a central curvature radius of an object side surface of thethird lens; R6 denotes a central curvature radius of the image sidesurface of the third lens; and TTL denotes a total optical length froman object side surface of the first lens to an image surface of thecamera optical lens along an optical axis.

As an improvement, the camera optical lens satisfies the followingconditions: 0.31≤f4/f≤2.11; and 0.06≤d7/TTL≤0.25; wherein, f4 denotes afocus length of the fourth lens; d7 denotes an on-axis thickness of thefourth lens; and TTL denotes a total optical length from an object sidesurface of the first lens to an image surface of the camera optical lensalong an optical axis.

As an improvement, the camera optical lens satisfies the followingconditions: −2.18≤f5/f≤−0.33; 0.30≤(R9+R10)/(R9−R10)≤4.23; and0.04≤d9/TTL≤0.16; where, f5 denotes a focus length of the fifth lens; R9denotes a central curvature radius of an object side surface of thefifth lens; R10 denotes a central curvature radius of an image sidesurface of the fifth lens; d9 denotes an on-axis thickness of the fifthlens; and TTL denotes a total optical length from an object side surfaceof the first lens to an image surface of the camera optical lens alongan optical axis.

As an improvement, the camera optical lens satisfies the followingconditions: TTL/IH≤1.40; where, IH denotes an image height of the cameraoptical lens; and TTL denotes a total optical length from an object sidesurface of the first lens to an image surface of the camera optical lensalong an optical axis.

As an improvement, the camera optical lens satisfies the followingconditions: FNO≤1.90; where, FNO denotes an aperture value of the cameraoptical lens.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain the technical solutions in the embodiments of thepresent disclosure more clearly, the drawings to be used for describingthe embodiments will be described briefly in the following. Apparently,the drawings in the following are only for facilitating the descriptionof the embodiments, for those skilled in the art, other drawings may beobtained from the accompanying drawings without creative work.

FIG. 1 is a schematic diagram of a structure of a camera optical lens inaccordance with Embodiment 1 of the present disclosure;

FIG. 2 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 1;

FIG. 3 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 1;

FIG. 4 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a structure of a camera optical lens inaccordance with Embodiment 2 of the present disclosure;

FIG. 6 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 5;

FIG. 7 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 5;

FIG. 8 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 5;

FIG. 9 is a schematic diagram of a structure of a camera optical lens inaccordance with Embodiment 3 of the present disclosure;

FIG. 10 is a schematic diagram of a longitudinal aberration of thecamera optical lens shown in FIG. 9;

FIG. 11 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 9;

FIG. 12 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 9.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

To make the objects, technical solutions, and advantages of the presentdisclosure clearer, the embodiments of the present disclosure aredescribed in detail with reference to the accompanying drawings asfollows. A person of ordinary skill in the related art would understandthat, in the embodiments of the present disclosure, many technicaldetails are provided to make readers better understand this application.However, the technical solutions sought to be protected by thisapplication could be implemented, even without these technical detailsand any changes and modifications based on the following embodiments.

Embodiment 1

As shown in the accompanying drawings, the present disclosure provides acamera optical lens 10. FIG. 1 shows the camera optical lens 10 ofEmbodiment 1 of the present disclosure, the camera optical lens 10comprises five lenses in total. Specifically, the camera optical lens 10comprises in sequence from an object side to an image side: an apertureS1, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4and a fifth lens L5. An optical element such as an optical filter GF maybe arranged between the fifth lens L5 and an image surface Si.

In this embodiment, the first lens L1 has a positive refractive power,the second lens L2 has a negative refractive power, the third lens L3has a positive refractive power, the fourth lens L4 has a positiverefractive power, and the fifth lens L5 has a negative refractive power.

In this embodiment, the first lens L1, the second lens L2, the thirdlens L3, the fourth lens L4 and the fifth lens L5 are all made ofplastic material. In some embodiments, the lenses may also be made ofother materials.

In this embodiment, a focal length of the camera optical lens 10 isdefined as f, and a focal length of the third lens L3 is defined as f3.The camera optical lens 10 satisfies a condition of 12.50≤f3/f≤20.00,which specifies a ratio between the focal length f3 of the third lens L3and the focal length f of the camera optical lens 10. When the abovecondition is satisfied, it is beneficial for correction of aberrationsand thus improving optical system performance.

A central curvature radius of an object side surface of the second lensL2 is defined as R3, and a central curvature radius of an image sidesurface of the second lens L2 is defined as R4. The camera optical lens10 further satisfies a condition of 0.30≤(R3+R4)/(R3−R4)≤1.00, whichspecifies a shape of the second lens. When the above condition issatisfied, the degree of light deflection when passing through the lensis reduced, and thus the aberration is effectively reduced.

An on-axis thickness of the third lens L3 is defined as d5, and anon-axis distance from an image side surface of the third lens to anobject side surface of the fourth lens L4 is defined as d6. The cameraoptical lens 10 further satisfies a condition of 0.30≤d5/d6≤0.50. Whenthe above condition is satisfied, it is beneficial for lens processingand assembly.

A focal length of the camera optical lens 10 is defined as f, and afocal length of the first lens L1 is defined as f1. The camera opticallens 10 satisfies a condition of 0.80≤f1/f≤0.90, which specifies a ratiobetween the focal length f1 of the first lens L1 and the focal length fof the camera optical lens 10. When the above condition is satisfied, itis beneficial for improving imaging quality.

A central curvature radius of an object side surface of the fourth lensL4 is defined as R7, and a central curvature radius of an image sidesurface of the fourth lens L4 is defined as R8. The camera optical lens10 satisfies a condition of 1.00≤(R7+R8)/(R7−R8)≤2.50, which specifies ashape of the fourth lens L4. When the above condition is satisfied, itis beneficial for balancing aberration and improving imaging quality.

In this embodiment, an object side surface of the first lens L1 isconvex in a paraxial region, and an image side surface of the first lensL1 is concave in the paraxial region.

A central curvature radius of the object side surface of the first lensL1 is defined as R1, and a central curvature radius of the image sidesurface of the first lens L1 is defined as R2. The camera optical lens10 satisfies a condition of −3.45≤(R1+R2)/(R1−R2)≤−0.95, thus the shapeof the first lens L1 is reasonably controlled, so that the first lensmay effectively correct system spherical aberration. Preferably, thecamera optical lens 10 further satisfies a condition of−2.15≤(R1+R2)/(R1−R2)≤−1.19.

An on-axis thickness of the first lens L1 is d1, and a total opticallength from the object side surface of the first lens L1 to the imagesurface Si of the camera optical lens 10 along the optical axis isdefined as TTL. The camera optical lens 10 satisfies a condition of0.07≤d1/TTL≤0.21, thus the shape of the first lens is reasonablycontrolled, which is beneficial for realization of ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.11≤d1/TTL≤0.17.

In this embodiment, the object side surface of the second lens L2 isconcave in a paraxial region, and the image side surface of the secondlens L2 is concave in the paraxial region.

The focal length of the camera optical lens 10 is defined as f, and afocal length of the second lens L2 is defined as f2. The camera opticallens 10 satisfies a condition of −4.42≤f2/f≤−1.11. It is beneficial forcorrecting aberration of an optical system by controlling a negativefocal power of the second lens L2 within a reasonable range. Preferably,the camera optical lens 10 further satisfies a condition of−2.76≤f2/f≤−1.39.

An on-axis thickness of the second lens L2 is defined as d3, and thetotal optical length from the object side surface of the first lens L1to the image surface Si of the camera optical lens 10 along the opticalaxis is defined as TTL. The camera optical lens 10 satisfies a conditionof 0.02≤d3/TTL≤0.07. When the above condition is satisfied, it isbeneficial for realization of ultra-thin lenses. Preferably, the cameraoptical lens 10 further satisfies a condition of 0.04≤d3/TTL≤0.06.

In this embodiment, an object side surface of the third lens L3 isconvex in a paraxial region, and the image side surface of the thirdlens L3 is concave in the paraxial region.

A central curvature radius of the object side surface of the third lensL3 is defined as R5, and a central curvature radius of the image sidesurface of the third lens L3 is defined as R6. The camera optical lens10 satisfies a condition of −28.22≤(R5+R6)/(R5−R6)≤−4.91, whichspecifies a shape of the third lens L3. When the above condition issatisfied, the degree of light deflection when passing through the lensmay be flattened, and thus the aberration is effectively reduced.Preferably, the camera optical lens 10 further satisfies a condition of−17.64≤(R5+R6)/(R5−R6)≤−6.13.

An on-axis thickness of the third lens L3 is defined as d5, and thetotal optical length from the object side surface of the first lens L1to the image surface Si of the camera optical lens 10 along the opticalaxis is defined as TTL. The camera optical lens 10 satisfies a conditionof 0.03≤d5/TTL≤0.08. When the above condition is satisfied, it isbeneficial for realization of ultra-thin lenses. Preferably, the cameraoptical lens 10 further satisfies a condition of 0.04≤d5/TTL≤0.06.

In this embodiment, the object side surface of the fourth lens L4 isconcave in a paraxial region and the image side surface of the fourthlens L4 is convex in the paraxial region.

The focal length of the camera optical lens 10 is defined as f, and thefocal length of the fourth lens L4 is defined as f4. The camera opticallens 10 satisfies a condition of 0.31≤f4/f≤2.11. The system has betterimaging quality and lower sensitivity by the reasonable distribution offocal power. Preferably, the camera optical lens 10 further satisfies acondition of 0.50≤f4/f≤1.69.

A central on-axis thickness of the fourth lens L4 satisfies is definedas d7, and the total optical length from the object side surface of thefirst lens L1 to the image surface Si of the camera optical lens 10along the optical axis is defined as TTL. The camera optical lens 10satisfies a condition of 0.06≤d7/TTL≤0.25. When the above condition issatisfied, it is beneficial for the realization of ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.10≤d7/TTL≤0.20.

In this embodiment, an object side surface of the fifth lens L5 isconcave in a paraxial region, and an image side surface of the fifthlens L5 is concave in the paraxial region. The focal length of thecamera optical lens 10 is defined as f, and the focal length of thefifth lens L5 is defined as f5. The camera optical lens 10 satisfies acondition of −2.18≤f5/f≤−0.33. The limitation on the fifth lens L5 mayeffectively flatten the light angle of the camera optical lens, andreduce tolerance sensitivity. Preferably, the camera optical lens 10further satisfies a condition of −1.36≤f5/f≤−0.42.

A central curvature radius of the object side surface of the fifth lensL5 is defined as R9, and a central curvature radius of the image sidesurface of the fifth lens L5 is defined as R10. The camera optical lens10 satisfies a condition of 0.30≤(R9+R10)/(R9−R10)≤4.23, which specifiesthe shape of the fifth lens L5. With the development towards ultra-thinand wide-angle lenses, it is beneficial for solving a problem likechromatic aberration of the off-axis picture angle, when the abovecondition is satisfied. Preferably, the camera optical lens 10 furthersatisfies a condition of 0.48≤(R9+R10)/(R9−R10)≤3.38.

An on-axis thickness of the fifth lens L5 is defined as d9, and thetotal optical length from the object side surface of the first lens L1to the image surface Si of the camera optical lens 10 along the opticalaxis is defined as TTL. The camera optical lens 10 satisfies a conditionof 0.04≤d9/TTL≤0.16. It is beneficial for realization of ultra-thinlenses when the above condition is satisfied. Preferably, the cameraoptical lens 10 further satisfies a condition of 0.06≤d9/TTL≤0.13.

It shall be understood that in other embodiments, the object sidesurfaces and the image side surfaces of the first lens L1, the secondlens L2, the third lens L3, the fourth lens L4 and the fifth lens L5 maybe provided as having convex or concave shapes other than thosedescribed above.

In this embodiment, an image height of the camera optical lens 10 isdefined as IH, and the total optical length of the camera optical lensis defined as TTL. The camera optical lens 10 satisfies a condition ofTTL/IH≤1.40, which is beneficial for realization of ultra-thin lenses.

In this embodiment, a field of view FOV of the camera optical lens 10 isgreater than or equal to 79.00°, thus realizing a wide angle.

In this embodiment, an aperture value FNO of the camera optical lens 10is less than or equal to 1.90, thus realizing a large aperture.

When the above conditions are satisfied, the camera optical lens 10 hasa large aperture, a wide angle, and an ultra-thinness while having goodoptical performance; and with such properties, the camera optical lens10 is particularly suitable for a mobile camera lens assembly and a WEBcamera lens that have CCD, CMOS and other imaging elements with highpixels.

In the following, an example will be taken to describe the cameraoptical lens 10 of the present disclosure. The symbols recorded in eachexample are as follows. The unit of the focal length, the on-axisdistance, the curvature radius, the on-axis thickness, an inflexionpoint position and an arrest point position is mm.

TTL: Optical length (the total optical length from the object sidesurface of the first lens L1 to the image surface Si) in mm.

Aperture value FNO: ratio of an effective focal length of the cameraoptical lens 10 to an entrance pupil diameter.

Preferably, inflexion points and/or arrest points may be arranged on theobject side surface and/or image side surface of the lens, so as tosatisfy the demand for high quality imaging. The description below maybe referred to for specific implementations.

The design information of the camera optical lens 10 in Embodiment 1 ofthe present disclosure is shown in Tables 1 and 2.

TABLE 1 R d nd vd S1 ∞ d0= −0.413 R1 1.425 d1= 0.605 nd1 1.5444 v1 55.82R2 5.557 d2= 0.139 R3 −26.455 d3= 0.220 nd2 1.6700 v2 19.39 R4 6.674 d4=0.293 R5 11.293 d5= 0.237 nd3 1.6610 v3 20.53 R6 14.844 d6= 0.556 R7−14.522 d7= 0.755 nd4 1.5444 v4 55.82 R8 −1.440 d8= 0.415 R9 −6.149 d9=0.339 nd5 1.5346 v5 55.69 R10 1.557 d10= 0.400 R11 ∞ d11= 0.110 ndg1.5168 vg 64.17 R12 ∞ d12= 0.451

In the table, meanings of various symbols will be described as follows.

S1: Aperture;

R: curvature radius at a center of an optical surface;

R1: central curvature radius of the object side surface of the firstlens L1;

R2: central curvature radius of the image side surface of the first lensL1;

R3: central curvature radius of the object side surface of the secondlens L2;

R4: central curvature radius of the image side surface of the secondlens L2;

R5: central curvature radius of the object side surface of the thirdlens L3;

R6: central curvature radius of the image side surface of the third lensL3;

R7: central curvature radius of the object side surface of the fourthlens L4;

R8: central curvature radius of the image side surface of the fourthlens L4;

R9: central curvature radius of the object side surface of the fifthlens L5;

R10: central curvature radius of the image side surface of the fifthlens L5;

R11: central curvature radius of an object side surface of the opticalfilter GF;

R12: central curvature radius of an image side surface of the opticalfilter GF;

d: on-axis thickness of a lens and an on-axis distance between lenses;

d0: on-axis distance from the aperture S1 to the object side surface ofthe first lens L1;

d1: on-axis thickness of the first lens L1;

d2: on-axis distance from the image side surface of the first lens L1 tothe object side surface of the second lens L2;

d3: on-axis thickness of the second lens L2;

d4: on-axis distance from the image side surface of the second lens L2to the object side surface of the third lens L3;

d5: on-axis thickness of the third lens L3;

d6: on-axis distance from the image side surface of the third lens L3 tothe object side surface of the fourth lens L4;

d7: on-axis thickness of the fourth lens L4;

d8: on-axis distance from the image side surface of the fourth lens L4to the object side surface of the fifth lens L5;

d9: on-axis thickness of the fifth lens L5;

d10: on-axis distance from the image side surface of the fifth lens L5to the object side surface of the optical filter GF;

d11: on-axis thickness of the optical filter GF;

d12: on-axis distance from the image side surface of the optical filterGF to the image surface Si;

nd: refractive index of d line;

nd1: refractive index of d line of the first lens L1;

nd2: refractive index of d line of the second lens L2;

nd3: refractive index of d line of the third lens L3;

nd4: refractive index of d line of the fourth lens L4;

nd5: refractive index of d line of the fifth lens L5;

ndg: refractive index of d line of the optical filter GF;

vd: abbe number;

v1: abbe number of the first lens L1;

v2: abbe number of the second lens L2;

v3: abbe number of the third lens L3;

v4: abbe number of the fourth lens L4;

v5: abbe number of the fifth lens L5;

vg: abbe number of the optical filter GF.

Table 2 shows aspherical surface data of the camera optical lens 10 inEmbodiment 1 of the present disclosure.

TABLE 2 Conic coefficient Aspherical surface coefficients k A4 A6 A8 A10A12 R1 −1.1669E+00  4.0680E−02 1.4850E−01 −7.4332E−01  2.5180E+00−5.3159E+00 R2  1.7583E+01 −4.3640E−02 −7.3622E−02   9.4508E−01−4.7429E+00  1.3801E+01 R3 −2.0068E+01 −2.5971E−02 1.1854E−01 4.0405E−01 −2.6794E+00  8.3182E+00 R4  3.7844E+01 −1.6186E−022.1234E−01 −4.2602E−01  2.2353E+00 −8.7352E+00 R5  3.2294E+01−2.3933E−01 3.1825E−01 −2.9004E+00  1.4850E+01 −4.7082E+01 R6−9.9000E+01 −1.6863E−01 5.1854E−02 −4.3397E−01  1.6884E+00 −4.0403E+00R7  4.3548E+01  4.4685E−03 −8.3408E−02   1.4781E−01 −1.7883E−01 1.3582E−01 R8 −1.0891E+00  9.5575E−02 −1.3991E−01   1.8730E−01−1.7812E−01  1.2379E−01 R9  4.2237E+00 −1.9940E−01 8.4751E−02 4.8710E−03 −1.1923E−02  3.8126E−03 R10 −7.7068E+00 −1.3729E−018.3447E−02 −4.0528E−02  1.5061E−02 −4.0332E−03 Conic coefficientAspherical surface coefficients k A14 A16 A18 A20 R1 −1.1669E+00 7.0961E+00 −5.8190E+00  2.6827E+00 −5.3596E−01 R2  1.7583E+01−2.4298E+01  2.5449E+01 −1.4612E+01  3.5355E+00 R3 −2.0068E+01−1.5512E+01  1.7393E+01 −1.0777E+01  2.8317E+00 R4  3.7844E+01 2.0455E+01 −2.7760E+01  2.0312E+01 −6.1528E+00 R5  3.2294E+01 9.2600E+01 −1.1041E+02  7.3152E+01 −2.0643E+01 R6 −9.9000E+01 6.0074E+00 −5.3844E+00  2.6788E+00 −5.6095E−01 R7  4.3548E+01−6.2940E−02  1.7087E−02 −2.4437E−03  1.3869E−04 R8 −1.0891E+00−5.6120E−02  1.5197E−02 −2.2249E−03  1.3568E−04 R9  4.2237E+00−6.1974E−04  5.7420E−05 −2.9088E−06  6.3441E−08 R10 −7.7068E+00 7.3023E−04 −8.3868E−05  5.4936E−06 −1.5579E−07

Among them, K is a conic index, A4, A6, A8, A10, A12, A14, A16, A18 andA20 are aspheric surface indexes.

y=(x ² /R)/{1+[1−(k+1)(x ² /R ²)]^(1/2) }+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A14x ¹⁴ +A16x ¹⁶ +A18x ¹⁸ +A20x ²⁰  (1)

Where, x is a vertical distance from a point on an aspheric curve to theoptical axis, and y is a depth of the aspheric surface (a verticaldistance from a point on the aspheric surface having a distance x to theoptical lens, to a tangent plane that tangents to a vertex on theoptical axis of the aspheric surface).

For convenience, an aspheric surface of each lens surface uses theaspheric surfaces shown in the above formula (1). However, the presentdisclosure is not limited to the aspherical polynomials form shown inthe formula (1).

Table 3 and table 4 show the inflexion points and the arrest pointdesign data of the camera optical lens 10 lens in Embodiment 1 of thepresent disclosure. Where, P1R1 and P1R2 represent respectively theobject side surface and image side surface of the first lens L1, P2R1and P2R2 represent respectively the object side surface and image sidesurface of the second lens L2, P3R1 and P3R2 represent respectively theobject side surface and image side surface of the third lens L3, P4R1and P4R2 represent respectively the object side surface and image sidesurface of the fourth lens L4, and P5R1 and P5R2 represent respectivelythe object side surface and image side surface of the fifth lens L5.Data in the column named “inflexion point position” refers to verticaldistances from the inflexion points arranged on each lens surface to theoptic axis of the camera optical lens 10. The data in the column named“arrest point position” refers to the vertical distances from the arrestpoints arranged on each lens surface to the optic axis of the cameraoptical lens 10.

TABLE 3 Number of Inflexion Inflexion Inflexion inflexion point pointpoint points position 1 position 2 position 3 P1R1 0 / / / P1R2 1 0.845/ / P2R1 1 0.375 / / P2R2 0 / / / P3R1 1 0.185 / / P3R2 2 0.185 0.965 /P4R1 1 1.465 / / P4R2 3 1.045 1.545 1.845 P5R1 2 1.175 2.425 / P5R2 30.505 2.465 2.685

TABLE 4 Number of Arrest arrest point points position 1 P1R1 0 / P1R2 0/ P2R1 1 0.555 P2R2 0 / P3R1 1 0.315 P3R2 1 0.315 P4R1 0 / P4R2 0 / P5R11 2.275 P5R2 1 1.175

FIG. 2 and FIG. 3 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 470 nm, 510 nm, 555 nm, 610 nm and650 nm after passing the camera optical lens 10 according toEmbodiment 1. FIG. 4 illustrates the field curvature and distortion oflight with a wavelength of 555 nm after passing the camera optical lens10 according to Embodiment 1, the field curvature S in FIG. 4 is a fieldcurvature in the sagittal direction, T is a field curvature in ameridian direction.

The following Table 13 shows various values of Embodiments 1, 2, 3 andvalues corresponding to parameters which are already specified in theabove conditions.

As shown in Table 13, Embodiment 1 satisfies the various conditions.

In this embodiment, the entrance pupil diameter ENPD of the cameraoptical lens 10 is 2.035 mm, a full vision field image height IH is3.270 mm, a field of view FOV in a diagonal direction is 79.60°, thusthe camera optical lens 10 has a large aperture, a wide-angle and isultra-thin. Its on-axis and off-axis chromatic aberrations are fullycorrected, thereby achieving excellent optical characteristics.

Embodiment 2

Embodiment 2 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1, and only differencestherebetween will be described in the following.

FIG. 5 illustrates a camera optical lens 20 according to Embodiment 2 ofthe present disclosure.

Table 5 and table 6 show design data of a camera optical lens 20 inEmbodiment 2 of the present disclosure.

TABLE 5 R d nd vd S1 ∞ d0= −0.403 R1 1.466 d1= 0.594 nd1 1.5444 v1 55.82R2 5.518 d2= 0.106 R3 −231.218 d3= 0.220 nd2 1.6700 v2 19.39 R4 5.929d4= 0.360 R5 8.372 d5= 0.230 nd3 1.6610 v3 20.53 R6 9.915 d6= 0.719 R7−265.606 d7= 0.647 nd4 1.5444 v4 55.82 R8 −1.321 d8= 0.312 R9 −6.432 d9=0.339 nd5 1.5346 v5 55.69 R10 1.256 d10= 0.400 R11 ∞ d11= 0.110 ndg1.5168 vg 64.17 R12 ∞ d12= 0.483

Table 6 shows aspherical surface data of each lens of the camera opticallens 20 in Embodiment 2 of the present disclosure.

TABLE 6 Conic Coefficient Aspheric Surface Indexes k A4 A6 A8 A10 A12 R1−1.1423E+00   4.1906E−02 4.1406E−02 7.5377E−02 −8.2947E−01  2.6569E+00R2 1.3603E+01 −3.3718E−02 −5.6512E−01  4.5881E+00 −1.8776E+01 4.5908E+01 R3 1.0000E+01 −7.8847E−02 −1.0838E−02  1.8965E+00−9.4265E+00  2.6394E+01 R4 5.6703E+00 −3.5442E−02 1.1478E−01 3.7166E−01−5.5893E−01 −3.1781E+00 R5 2.8304E+01 −2.4210E−01 3.5152E−01−3.0096E+00   1.4350E+01 −4.2107E+01 R6 −3.9721E+01  −1.9653E−013.4991E−01 −1.9884E+00   6.4886E+00 −1.3197E+01 R7 4.4000E+01 5.2120E−02 −1.6557E−01  3.3345E−01 −4.0311E−01  3.0977E−01 R8−1.2067E+00   1.8724E−01 −2.1575E−01  1.6333E−01  8.3276E−03 −7.6320E−02R9 4.1506E+00 −2.3848E−01 1.4352E−01 −1.2964E−02  −1.4938E−02 6.6257E−03 R10 −7.4367E+00  −1.6176E−01 1.1551E−01 −5.4921E−02  1.7506E−02 −3.6979E−03 Conic Coefficient Aspheric Surface Indexes k A14A16 A18 A20 R1 −1.1423E+00  −4.3348E+00  3.9088E+00 −1.8437E+00 3.5158E−01 R2 1.3603E+01 −6.8951E+01  6.2426E+01 −3.1319E+01 6.6892E+00 R3 1.0000E+01 −4.5204E+01  4.6514E+01 −2.6344E+01 6.3004E+00 R4 5.6703E+00  1.3926E+01 −2.3445E+01  1.8899E+01−6.0088E+00 R5 2.8304E+01  7.6438E+01 −8.3948E+01  5.1182E+01−1.3279E+01 R6 −3.9721E+01   1.6885E+01 −1.3200E+01  5.7781E+00−1.0814E+00 R7 4.4000E+01 −1.5294E−01  4.5366E−02 −7.2218E−03 4.7134E−04 R8 −1.2067E+00   4.3414E−02 −1.1212E−02  1.4162E−03−7.0558E−05 R9 4.1506E+00 −1.2526E−03  1.1959E−04 −5.1994E−06 6.1560E−08 R10 −7.4367E+00   4.8865E−04 −3.6167E−05  1.1576E−06−2.6717E−09

Table 7 and table 8 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 20 according toEmbodiment 2 of the present disclosure.

TABLE 7 Number of Inflexion Inflexion Inflexion inflexion point pointpoint points position 1 position 2 position 3 P1R1 0 / / / P1R2 1 0.885/ / P2R1 1 0.455 / / P2R2 0 / / / P3R1 1 0.215 / / P3R2 2 0.225 0.965 /P4R1 3 0.085 0.975 1.615 P4R2 3 0.815 1.315 1.915 P5R1 3 1.055 2.0852.455 P5R2 2 0.485 2.795 /

TABLE 8 Number of Arrest Arrest arrest point point points position 1position 2 P1R1 0 / / P1R2 0 / / P2R1 1 0.605 / P2R2 0 / / P3R1 1 0.375/ P3R2 1 0.385 / P4R1 2 0.145 1.135 P4R2 0 / / P5R1 0 / / P5R2 1 1.315 /

FIG. 6 and FIG. 7 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 470 nm, 510 nm, 555 nm, 610 nm and650 nm after passing the camera optical lens according to Embodiment 2.FIG. 8 illustrates a field curvature and a distortion of light with awavelength of 555 nm after passing the camera optical lens 20 accordingto Embodiment 2. The field curvature S in FIG. 8 is a field curvature ina sagittal direction, and T represents field curvature in meridiandirection.

As shown in Table 13, Embodiment 2 satisfies the above conditions.

In this embodiment, the entrance pupil diameter ENPD of the cameraoptical lens 20 is 2.037 mm. The full vision field image height IH is3.270 mm, the field of view FOV in the diagonal direction is 79.40°.Thus, the camera optical lens 20 has a large aperture, a wide-angle andis ultra-thin. Its on-axis and off-axis chromatic aberrations are fullycorrected, thereby achieving excellent optical characteristics.

Embodiment 3

Embodiment 3 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1, and only differencestherebetween will be described in the following.

FIG. 9 illustrates a camera optical lens 30 of Embodiment 3 of thepresent disclosure, and an object side surface of the fifth lens L5 isconvex in a paraxial region.

Table 9 and Table 10 show design data of a camera optical lens 30 inEmbodiment 3 of the present disclosure.

TABLE 9 R d nd vd S1 ∞ d0= −0.413 R1 1.447 d1= 0.639 nd1 1.5444 v1 55.82R2 8.212 d2= 0.100 R3 −13.112 d3= 0.220 nd2 1.6700 v2 19.39 R4 6.605 d4=0.324 R5 4.877 d5= 0.230 nd3 1.6610 v3 20.53 R6 5.621 d6= 0.469 R7−4.413 d7= 0.586 nd4 1.5444 v4 55.82 R8 −1.862 d8= 0.437 R9 2.095 d9=0.492 nd5 1.5346 v5 55.69 R10 0.998 d10= 0.400 R11 ∞ d11= 0.110 ndg1.5168 vg 64.17 R12 ∞ d12= 0.513

Table 10 shows aspherical surface data of each lens of the cameraoptical lens 30 in Embodiment 3 of the present disclosure.

TABLE 10 Conic Coefficient Aspheric Surface Indexes k A4 A6 A8 A10 A12R1 −1.0922E+00  3.7068E−02 8.1258E−02 −1.5230E−01 7.2339E−02  3.6754E−01R2  1.3251E+01 −1.2441E−02 −1.6005E−01   1.7080E+00 −8.1512E+00  2.2667E+01 R3  1.0000E+01  3.3014E−02 −6.9352E−02   1.3565E+00−6.9514E+00   2.0020E+01 R4  2.6150E+01  3.8343E−02 2.5050E−01−2.0398E+00 1.2190E+01 −4.2041E+01 R5  9.6022E+00 −1.7494E−01 9.6628E−02−1.1072E+00 5.3449E+00 −1.6421E+01 R6 −3.8957E+00 −1.1643E−01 8.3915E−03−2.9559E−01 1.1972E+00 −3.0962E+00 R7 −2.4515E+00 −3.3063E−02−4.9822E−02   6.3206E−02 7.0746E−02 −1.9355E−01 R8 −5.9997E−01−1.7249E−01 3.0628E−01 −4.2515E−01 4.4709E−01 −2.7867E−01 R9 −1.0000E+01−5.1527E−01 4.4701E−01 −2.3964E−01 8.8897E−02 −2.2859E−02 R10−5.1559E+00 −2.1657E−01 1.6221E−01 −8.4803E−02 3.0943E−02 −7.8597E−03Conic Coefficient Aspheric Surface Indexes k A14 A16 A18 A20 R1−1.0922E+00 −7.1431E−01   4.7054E−01 −5.4207E−02  −3.9735E−02 R2 1.3251E+01 −3.8231E+01   3.8459E+01 −2.1243E+01   4.9516E+00 R3 1.0000E+01 −3.4843E+01   3.6212E+01 −2.0679E+01   4.9870E+00 R4 2.6150E+01 8.6133E+01 −1.0357E+02 6.7611E+01 −1.8459E+01 R5  9.6022E+003.1387E+01 −3.6354E+01 2.3320E+01 −6.3064E+00 R6 −3.8957E+00 4.9267E+00−4.6864E+00 2.4539E+00 −5.3548E−01 R7 −2.4515E+00 1.5367E−01 −5.7497E−021.0387E−02 −7.2942E−04 R8 −5.9997E−01 1.0122E−01 −2.1230E−02 2.3797E−03−1.0982E−04 R9 −1.0000E+01 3.9714E−03 −4.4332E−04 2.8667E−05 −8.1598E−07R10 −5.1559E+00 1.3447E−03 −1.4671E−04 9.1687E−06 −2.4820E−07

Table 11 and table 12 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 30 according toEmbodiment 3 of the present disclosure.

TABLE 11 Number of Inflexion Inflexion inflexion point point pointsposition 1 position 2 P1R1 0 / / P1R2 1 0.835 / P2R1 1 0.365 / P2R2 0 // P3R1 1 0.325 / P3R2 2 0.345 0.985 P4R1 1 1.275 / P4R2 2 0.975 1.405P5R1 2 0.275 1.305 P5R2 2 0.475 2.515

TABLE 12 Number of Arrest arrest point points position 1 P1R1 0 / P1R2 0/ P2R1 1 0.585 P2R2 0 / P3R1 1 0.545 P3R2 1 0.575 P4R1 0 / P4R2 0 / P5R11 0.515 P5R2 1 1.225

FIG. 10 and FIG. 11 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 470 nm, 510 nm, 555 nm, 610 nm and650 nm after passing the camera optical lens 30 according to Embodiment3. FIG. 12 illustrates field curvature and distortion of light with awavelength of 555 nm after passing the camera optical lens 30 accordingto Embodiment 3. The field curvature S in FIG. 12 is a field curvaturein a sagittal direction, and T represents field curvature in meridiandirection.

The following Table 13 shows the values corresponding to the conditionsin this embodiment according to the above conditions. Obviously, thecamera optical lens 30 according to this embodiment satisfies thevarious conditions.

In this embodiment, a pupil entering diameter ENPD of the camera opticallens is 2.037 mm, a full vision field image height is 3.270 mm, and avision field angle in the diagonal direction is 79.60°. Thus, the cameraoptical lens 30 is a wide-angle and is ultra-thin. Its on-axis andoff-axis chromatic aberrations are fully corrected, thereby achievingexcellent optical characteristics.

TABLE 13 Parameters and conditions Embodiment 1 Embodiment 2 Embodiment3 f3/f 17.84 19.68 12.70 (R3 + R4)/(R3 − R4) 0.60 0.95 0.33 d5/d6 0.430.32 0.49 f 3.866 3.870 3.870 f1 3.337 3.475 3.111 f2 −7.861 −8.545−6.466 f3 68.952 76.158 49.146 f4 2.869 2.429 5.455 f5 −2.281 −1.929−4.215 f12 4.979 5.119 4.996 FNO 1.90 1.90 1.90 TTL 4.520 4.520 4.520 IH3.270 3.270 3.270 FOV 79.60° 79.40° 79.60°

It can be appreciated by one having ordinary skill in the art that thedescription above is only embodiments of the present disclosure. Inpractice, one having ordinary skill in the art can make variousmodifications to these embodiments in forms and details withoutdeparting from the spirit and scope of the present disclosure.

What is claimed is:
 1. A camera optical lens, comprising five lenses,the five lenses are, from an object side to an image side in sequence: afirst lens having a positive refractive power; a second lens having anegative refractive power; a third lens having a positive refractivepower; a fourth lens having a positive refractive power; and a fifthlens having a negative refractive power; wherein, the camera opticallens satisfies the following conditions: 12.50≤f3/f≤20.00;0.30≤(R3+R4)/(R3−R4)≤1.00; and 0.30≤d5/d6≤0.50; where, f denotes a focuslength of the camera optical lens; f3 denotes a focus length of thethird lens; R3 denotes a central curvature radius of an object sidesurface of the second lens; R4 denotes a central curvature radius of animage side surface of the second lens; d5 denotes an on-axis thicknessof the third lens; and d6 denotes an on-axis distance from an image sidesurface of the third lens to an object side surface of the fourth lens.2. The camera optical lens according to claim 1, wherein, the cameraoptical lens further satisfies the following conditions: 0.80≤f1/f≤0.90;where, f1 denotes a focus length of the first lens.
 3. The cameraoptical lens according to claim 1, wherein, the camera optical lensfurther satisfies the following conditions: 1.00≤(R7+R8)/(R7−R8)≤2.50;where, R7 denotes a central curvature radius of the object side surfaceof the fourth lens; and R8 denotes a central curvature radius of animage side surface of the fourth lens.
 4. The camera optical lensaccording to claim 1, wherein, the camera optical lens further satisfiesthe following conditions: −3.45≤(R1+R2)/(R1−R2)≤−0.95; and0.07≤d1/TTL≤0.21; where, R1 denotes a central curvature radius of anobject side surface of the first lens; R2 denotes a central curvatureradius of an image side surface of the first lens; d1 denotes an on-axisthickness of the first lens; and TTL denotes a total optical length fromthe object side surface of the first lens to an image surface of thecamera optical lens along an optical axis.
 5. The camera optical lensaccording to claim 1, wherein, the camera optical lens further satisfiesthe following conditions: −4.42≤f2/f≤−1.11; and 0.02≤d3/TTL≤0.07;wherein, f2 denotes a focus length of the second lens; d3 denotes anon-axis thickness of the second lens; and TTL denotes a total opticallength from an object side surface of the first lens to an image surfaceof the camera optical lens along an optical axis.
 6. The camera opticallens according to claim 1, wherein, the camera optical lens furthersatisfies the following conditions: −28.22≤(R5+R6)/(R5−R6)≤−4.91; and0.03≤d5/TTL≤0.08; wherein, R5 denotes a central curvature radius of anobject side surface of the third lens; R6 denotes a central curvatureradius of the image side surface of the third lens; and TTL denotes atotal optical length from an object side surface of the first lens to animage surface of the camera optical lens along an optical axis.
 7. Thecamera optical lens according to claim 1, wherein, the camera opticallens further satisfies the following conditions: 0.31≤f4/f≤2.11; and0.06≤d7/TTL≤0.25; wherein, f4 denotes a focus length of the fourth lens;d7 denotes an on-axis thickness of the fourth lens; and TTL denotes atotal optical length from an object side surface of the first lens to animage surface of the camera optical lens along an optical axis.
 8. Thecamera optical lens according to claim 1, wherein, the camera opticallens further satisfies the following conditions: −2.18≤f5/f≤−0.33;0.30≤(R9+R10)/(R9−R10)≤4.23; and 0.04≤d9/TTL≤0.16; where, f5 denotes afocus length of the fifth lens; R9 denotes a central curvature radius ofan object side surface of the fifth lens; R10 denotes a centralcurvature radius of an image side surface of the fifth lens; d9 denotesan on-axis thickness of the fifth lens; and TTL denotes a total opticallength from an object side surface of the first lens to an image surfaceof the camera optical lens along an optical axis.
 9. The camera opticallens according to claim 1, wherein the camera optical lens furthersatisfies the following conditions: TTL/IH≤1.40; where, IH denotes animage height of the camera optical lens; and TTL denotes a total opticallength from an object side surface of the first lens to an image surfaceof the camera optical lens along an optical axis.
 10. The camera opticallens according to claim 1, wherein the camera optical lens furthersatisfies the following conditions: FNO≤1.90; where, FNO denotes anaperture value of the camera optical lens.